Socket and plug device.



G. WRiGHT.

SOCKET AND PLUG DEVICE. APPLxcTloN mep MAR. 1l. |914.

1,27 1 98 l Patented J 11115 9, 1918` Fig. 5

llihv /2 Witnesses; lnveto'r:

f- C. .init l To @Z5 'whom ai may comet-:ft

Be it known that l, GILBERT Vinion'r, a

of the receptacle or socket'ehonld have war.

tertigh-t protection both when the connection plug is in it and when itis not, so tint it shall. he sol able on motor boats and in vonereepeeial protection froth-Wa* or inoistuie desirable. i also aim inekethe device and its parte simple and rugged in cons auction, easy andcheap to innui'lactul'e, and reliable and convenient in use. heinvention comprises various novel features ot construction and variousnovel combinations and arrangements of parte that will be hereinafterset forth by the illuetration and description 01 the best form ofapparatus embodying them' at present known to me, and will also bedetinitely pointed out and distinguished in my claims; but, while `theinvention extends to Specific features and details otl1e devices shownand described, it is not coniined thereto. rhe invention also comprisesa novel. method for the manufacture one of 'the parte.

ln the accompanying diaivings, Figure l shows the Soca-et device, partlyin section, secured in the deck of a motor boat or the like; it alsoShows tivo plug devices, lone ot them in place in the Socket, and 'theother partly in section.

2 is a i'raginentary detail view1 only partly in section, illustratingra feature of the socket device in front ot the plane of section of Fig.1.

Figs. 3 and 4 are enlarged sectional views of the socket device and ofthe plug device that is in place in it in Fig. l, respectively.

Fig'. 5 ie a fragmentary detail View illustrating the making' of one etthe parte.

Frein "Figs, 1 and '2. it will be Seen that the socket device i and theping; devices 2 and 3 are of the bayonet type, the engagementassociated; with the socket nar-.fh I' inininunn removal oi theinsulation.

ilegal o arial No. 823,955.

form of bayonet pins or Studs 4L extending inward from its shell o? Wall5, and that associa-ted with the plug being the usuai bayonet slots G or7. It will also be seen that there is a flanged collar 8 soldered oroti'iervvise secured to the Shell 5 oi the socket device l, and that thescrews by which the socket device is secncd in its hole in. the deckplanlzing i) extend through iolcs in this collar. From l and 3 it willseen that besides the engagement mea-ns et for securing a plug;r devicein it, the socket device 'l comprises duplicate contact oi' engagementmeansl il, il ior making clf-ctiin cal conne "ion with connective pingi, said engagement means 1l, l1 being inconted in a cylindricalinsulatingl part i3 which is secured in the shell 5 by-a transve screw,holt, or pin 13. Each olf the cont: members il comprises a holt-likepart 1..- Whose head is exposed in a recess in the end of the part i2adjacent the mouth of the socket and whose shank extends through saidpart and has on it a short torride or tube l5. The waterproof cord orcable 1G extends through an ogre-ning,r in the cap 1'5" at the lower endof the'shcll 5, and its two conductors are soldered fast (before thepart l2 is fastened in place by the pin 13) in the terrules 15, each ot'which has diainetrically opposite slots' 1S to 'facilitate solderingwith The entrance ot the cable 1G into the cap I? can, it desired. bemade water-tight by any snitable packing or other waterprooiE materialin the lower end of the Shell 5; sach material is not shown in thedrawing to avoid confusion.

Referring', now, to Figs, l. and 4, it will be Seen that the body oit'the connection plug device 2 shown in place in the socket 1 in Fig. 1 isadapted to enter the upper end, o1" the socket device l in such WiSethat its bayonet slot engagement means shall take thel vice 2 'car ie@dnpliate yielding engagement or Contact means for coacting with.

are

the Contact means ll, ll ol' the socket d evice l, the contact means 2l.2l being inounted in an insulating purl' "32 that resembles the part l2and is Secured in the shell 20 in a similar way, YEach elE the contactelements 2l comprises a double-einled hollow body part Q3 in whose upperend one of the conductoral of the flexible waterproof cable 2l issoldered; a cap 25 on the lower end. olE the part 23; a shoulderedContact member proper 2G the small end or" which extends out through ahole in the cap 25; and a spiral spring| 2T arranged in the lowerportion oi the part with Yite lower end in a recess in the enlargedupper end of the Contact member T he hollow in the upper end ot' euchpart is separated from the Spring' chamber in the lower portion thereofby a septum consisting of e metal disli 23 whose edges are held in anannuler groove in the Well' of the part 23. is will be seen from Fig.v5, the part Z3 een be easily formed by inserting` the plein tubularshell 23 in, a two/part die 23@ with e Stetionany member 23 extendingupward in the tube about to the, division between the peine of the'die,placing the dish 23 in the tube @n.tep of the member 2S", cupped orconceived, Se that although when liet it will be larger than. theinterior4 of the tube it will nevertheless easily the semerind inollyforcing; e movable member 23 down 0n the disk 'until it 'is flattenedout, ite expanding locally expanding the wall ol the tube ont into anannular groove 223i in the die t the junction of its halves in the .einoi a hollenv beet. whose groove cont-eins the edge of the disk and ythesubsequent rais'i 'oei-t of the die permitt completed. part 23. flangedcollar 28 is soldered or otherwise secured on the Shell 20, yieldingpacking menne extends around the device. beneath the alnitmeut orShoulder 'formed by the flange 28; lhie pac-lo ing may advantageously bean in lia-rubber having the iorm and crescent-shaped erosie-sectionShown in the various figures. rlf'he relative arrangenient of lhe vurioupai is such that when lthe plug;A device 2 is Secured in place in thesocket l a good electrical connection will be harmed, and the peckingineens 29 will be compressed watertight between the 'abutment orShoulder formed by the flange 3h and that 'formed by the Flange 8.

As it will ordinarily be juet as important t0 keep Water or moieture outo' the socket l when the connective plugg,r device 2 it; not in it aswhen it is in it, l prefer lio provide the stopper plug device 3 forthis purpose, securing it to the deck 9 beside the socket l by a screwand :i chain 30. le shown, the body portion of this device which has thebayonet slots 7 (similar to the slots 6 of the connecinviami thepacking' means 29 oll the connective plug device 2. Il`he upper Side ofthe end per-t 32 has a Stud 3l to which the chain 39 is se' cured, andits edge is knurled to give a goed hold for manipulating it.

lt will be seen that all the parte oi' the devices described can easilybe inode of brass or other metal or of liber or other insulatingmaterial and that with the flanged collars il and 28, the Stopper plugdevice 3, and the chain 30 omitted, these devices can be uned esordinary' sockets and connective devices not intended to be water-tight,so that 'the complete water-tight equipment can be mede up as called forfrom ready manufactured ordinary stock parts supplemented by e minimumof Special parta-and when it 'is not deemed necessary for the securingof the Socket device l in place the flanged coller 8 een be omitted andthe deck of the like made to serve es the abutment means oi seidclevice, thus even reducing the number of special parte required.

While l have referred to the device 'l e socket and the device 2 a plugthis terminology is a matter of convenient dise tinctioilipbetiveen thefixed and detachable parte, rather than a dillierentiation of theircapabilities due io Structural dilerenccegin deed, the bayonet slots 6and yielding contacl's 2l oi' the device 2 adept it for use as Socketand would ordinarily cause it to be clonecd as such. However, While itis .not nec enters the fixed one, or, when engagement means of thebayonet type are used, to have the bayonet elet in the detachable part(as i shown), yet it is practically simple and ed vnutageous lo do so.

W hat l claim as new and desire to secure by Letters l-al'ent of theUnited States, is

l. .iii connective plug device for e bayonet socket comprising a hollowbody adopted to enter therein having bayonet engagement means adapted tocoact with that of the socket and an external shoulder; yielding contactmeans in said body each comprising a shell with a partition thereinconsisting of a metal disk held at its edges in a groove in. the wall ofthe shell, a movable contact member in one end of said shell, and aspring in said shell between said member and said pairtitiou; and anelastic ring on Said body adapted to be compressed water-tight betweenSaid flange and abutment menne` aan@ elated with the Socket.

2. A double ended hollow body part for ery to make the part which theother yielding Contact dement cnmprsug one pisa@ tufbum' Shell withpaton heein consisting of a metal disk of ax'ger size than th@ interiorof said she hield at s edge in a groeve in fh@ wall of tha Shel.

3. A double ended hollow body pari for yielding Contact @lamentcomprising a Luba-- im' shell wlh a partition tnerem conslsmg of aymetal disk of large Size *than 'the intevmesses BENJAM HULL,

